An object is placed at a distance of 10 cm in front of a concave mirror. Its image is formed at a distance at 15 cm on the same side. The focal length of the mirror is?
A-6 cm
B6 cm
C-30 cm
D30 cm
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Related Questions:
A concave mirror forms a real, inverted and same-sized image of an object. Where is the object placed?
At which position on principal axis does a concave mirror forms a highly diminished, real and inverted image of an object?
An object is placed in front of a concave mirror of focal length 12 cm, at a distance of 8 cm. Its image is formed at a distance of?
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ഫോക്കൽ ദൂരം 5 cm ആയ ഒരു ലഘുസൂക്ഷ്മ ദർശിനി (Simple microscope) യുടെ കോണിയ ആവർധനം (Angular magnification) എത്രയാണ്?